Who led about 1,000 Puritans to Massachusetts and established Boston in 1630?

The individual who led about 1,000 Puritans to Massachusetts and established Boston in 1630 is John Winthrop. He was a prominent Puritan leader and became the first governor of the Massachusetts Bay Colony. Winthrop envisioned the colony as a "city upon a hill," a model of Christian charity and an example for others, which reflects the Puritan goal of creating a society based on their religious beliefs. His leadership during this pivotal migration was instrumental in the establishment and growth of the colony, shaping its early governance and religious practices.

Roger Williams was known for his advocacy of religious freedom and founded Rhode Island after leaving the Massachusetts Bay Colony. William Bradford was a leader of the Pilgrims who settled Plymouth Colony but was not directly involved in the establishment of Boston. Thomas Hooker, another significant figure, led a group of Puritans to Connecticut and founded Hartford, but he was not involved in the founding of Massachusetts. Thus, John Winthrop stands out as the correct answer for this specific question.